Power device.



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AApplication led Max'. 21, 1900.) (No Model.) Y z Sheets-Sheet l 1@ A d w, I i l n ww wmmmn /NVENTH A 770/?NE YS W/ TNE SSE S No. 666,496. Patented lan. 22, 190|.

R. C. BOBLE.

OWER DEVICE.

(Application Bled Mar. 21, 1900.) (No Model.) 2 Sheets-Sheet 2.

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POWER DEVICE.

SPECIFICATION forming part of Letters Patent No. 666,496, dated January 22, 1901.

Application iiled March 21, 1900. Serial No. 9,651. LNo model.)

T0 @ZZ wwnt t muy concer-7e:

Be it known that l, RODDY C. COBLE, a citizen of the United States, and a resident of Marion, in the county of Marion and State of Kansas, have invented a new and Improved Power Device, of which the following is a full, clear, and exact description.

My invention relates to improvements in a power device which is particularly adapted for use in connection with hay-stacking and like machines; and the purpose of the invention is to provide a portable device provided with means for ready attachment to the body of a hoisting-machine and connection with the hoists of such machines.

The invention consists in the novel construction and combination of the several parts, as will be hereinafter fully set forth, and pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure lis a plan view of the power device and a hay-stacker, showing the manner in which a connection is made between the device and a machine to which it is applied. Fig.2 is a vertical section through the power device, the view being on an enlarged scale; and Fig. 3 is a detail perspective view of the coupling for the power device in which the guide-rollers for a hoisting-rope are located.

A represents the base of a straw-stacking machine, and B the fork for lifting and dumping the straw.

The feature of the present in venton relates to the manner in which a fork, for example, is raised and lowered and to provide such a construction of elevating mechanism that a fork may be made to drop without backing the animal employed to operate the power mechanism. This power device consists of a base D, which is of sled-like construction and is connected with the body-base A by a coupling-beam C. The base D of the power device usually consists of runners 32, connected by suitable cross-bars 33 and braced, if necessary, by longitudinal bars 34. Diagonal beams 35 are carried upward from the end portions of the runners in direction of the center, and these diagonal beams meet and support an upper central cross-beam 36,

which is provided at its center with a down- Wardly-eXtending metal bearing 37, shown as having longitudinal slots in its front and in its rear. The diagonal beams 35 are strengthened by truss-rods 39 or their equivalents, and these rods connect with brackets which are secured to the base D and with straps 39, which are carried over the upper central crossbar 36.

A bearing-plate 40 is secured in any suitable or approved manner upon the central portion of the main central cross-bar 33 of the base D of the power device, as shown in Fig. 2, and this plate 40 receives the spindle end 41 of a shaft 42. This shaft extends through the central portion of the upper central crossbar 36, and the upper portion 43 of the shaft is polygonal, in order that it may receive a sleeve or collar 44, having a correspondinglyshaped bore,which sleeve or collaris attached to the power-lever 45, with which one or more animals are to be connected. The shaft 42 is provided with a cylindrical enlargement 46 near its lower end and with a conical enlargement 47 just above its lower bearing portion 40. A drum 48 is loosely mounted on the shaft 42, having its bore conformed to the contour of the two enlargements 46 and 47 of the said shaft, and this drum 48 is turned when it is held in close frictional engagement with the conical enlargement 47 of the shaft 42. Such a contact is readily accomplished through the medium of a controlling-lever 49, which is forked at its rear end, so that it can pass out at each side of the shaft 42 and be located within the slotted projection 37 from the upper central cross-bar 36, as shown in Fig. 2. The forked portion 50 of the controlling-lever 49 is pivoted to an upright 38, secured upon the base D of the power device, as is shown in both Figs. l and 2, or Inay be pivoted to the cross-bar 36, if desired. This lever at its rear or forked end has bearing upon the upper face of the washer 52,and said washer in its turn has bearing upon the upper end surface of a sleeve 52, which sleeve carries a shoe 53. The shoe 53 slides freely up and down upon the shaft 42, but does not revolve upon the shaft but has circular movement therewith. The shoe 53 has bearing upon the upper surface of the drum 48. Therefore when the free end of the lever 49 IOO is drawn down it firmly binds the drum 48 between the friction cap or shoe 53 and the bearing on the shaft 42, compellingthe drum to turn with the shaft and shoe, but when the lever 49 is released from the tensiony the drum 48 will turn loosely upon the shaft 42.

The hoist-rope 23 of a stacker is carried below the fiooring of the couplingbeam C when it is of the box construction shown in Fig. 3, but if the coupling-beam is solid, the hoistrope is carried along the upper portion of the coupling-beam in a suitable groove, channel, or bore, and the said hoist-rope, as illustrated particularly in Fig. l, is carried to an engagement with friction-pulleys 56 and 57, mounted on the coupling-beam, thence to an engagement with one or more frictionwheels 58, carried by the base D of the power device, and finally the hoist-rope 23 is attached in any suitable or approved manner to the drum 48.

The coupling-beam C may be connected with the base D of the power device in any suitable or approved manner. Usually, however, the coupling-beam is provided with a tongue 55, and this tongue is pivotally connected with a loop 54, which is attached to the forward cross-bar of the said base D, as illustrated in Fig. 2; but other means may be provided for making the connection, if desired. In Fig. 3 I have illustrated the coupling-beam C as of box-like construction, and in the other views this beam is illustrated as solid.

The controlling-lever is operated from the l' base A of the body portion of the machine by the operator having charge of the mechanism for moving the fork from the'side to the end of the machine, and vice versa. This mechanism preferably consists of ashaft 59, which is journaled in a longitudinal bar 60, and this shaft 59 carries a pulley 6l at its bottom, and at the top of the shaft a lever 62 is secured, extending to the back of the machine, as illustrated in Fig. 1, and this lever is adapted to enter any one of a series of notches made in a rack 63, usually supported by the said longitudinal bar 60 and the central crossbar l1, as shown in Fig. 1. For example, when the fork has received its load the lever 62 is carried forward, winding up a rope or chain 64 on the pulley G1,which rope or chain, after passing over guidepulleys 65 and 66,10- cated, respectively, on the base A and on the coupling-beam C, is connected with the free end of the controlling-lever 49. When the rope or chain is thus wound `around the pulley 61, the free end of the controlling-lever 49 is drawn downward and the shoe 53 is brought in compressing engagement with the drum 48, causing the said drum to be held in frictional engagement with the conical section 47 of the shaft 42, and as the shaft 42 is revolved the drum 48 is turned also and the hoist-rope 23 is wound thereon and the fork elevated. When the fork B has reached a suitable elevation, this controllingshaft is turned in order to carry the fork to the end of the machine where the load is to be dumped. The animal attached to the power-lever 45 is now stopped, not to start again until the fork is to be again elevated, and the manipulating-lever 62 is then carried to the rear, unwinding the rope or chain 64 from the wheel 6l and permitting the free end of the controlling-lever to assume its normal position, at whichtime the shoe 53 will be carried out of compressing engagement with the drum 48, and the drum will be free to turn, and the weight of the fork on the hoist-rope will cause the rope to uncoil from the drum and the fork can then drop of its own weight to its receiving or loading position.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. In a power device, a support, a shaft mounted to revolve upon the said support, a power-lever secured to the said shaft, a conical section formed upon the said shaft bclow said power-lever, a controlling-lever, a sleeve receiving the said shaft and operated by the lever, and a shoe carried by the sleeve and adapted to force the drum in iirm contact with the conical section of the shaft, as described.

2. A power device comprising a base, a shaft journaled upon said base, means for turning said shaft, a conical section formed on the shaft, a drum loosely mounted on the shaft and having a portion of its bore shaped to receive the conical projection of the shaft, the said drum being adapted also to receive one end of a hoist-rope, a controlling-lever, a fulcrum for the same, adevice mounted on the shaft and arranged to force the drum in engagement with the conical section of said shaft, which device is operated by said lever, a winding-shaft, and a connection between the winding-shaft and the free end of the controlling-lever, as specified.

3. A power device comprising a base, a shaft having a projection therefrom, a drum loosely mounted on the shaft, adapted for engagement with the said projection and for connection with the hoisting mechanism of a machine, and means for forcing the drum in engagement with the projection of the shaft, or permitting said drum to turn freely on the shaft, which means includes a controlling-lever and a sleeve receiving the shaft and operated by said lever, for the purpose set forth.

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In testimony whereof I have signed my 

